With fantastic support from Karl (author of Syphon), I eventually managed to copy a run.bin file to my Thomson hard drive. Unfortunately upon re-assembing the box, I can see no sign of firmware 1.7.7. (I tried "revert software" on the technical info screen, power off/ on etc. to no effect). So either: [list=1][*]Syphon isn't quite doing what I had hoped it would do, or[*]Updating the software on a Thomson involves more than just copying a new run.bin file to the HD, or[*]The file I used isn't in fact 1.7.7, or[*]Something else I haven't thought of.[/list]It would be helpful if anybody who has extracted a run.bin file from their 1.7.7 Thomson could PM me. Also, if anyone has any suggestions what I could try next, they'd be gratefully received!